Interprocess_Communication_IPC_Presentation.pptx

Interprocess_Communication_IPC_Presentation

1. Interprocess Communication (IPC) in Operating Systems Overview, Diagrams, Real-World Examples, and Code Walkthroughs

2. What is IPC? Mechanism for processes to exchange data and synchronize actions Needed because processes run in isolated memory spaces Used for coordination, data sharing, modular programming

3. Types of IPC Mechanisms Pipes and Named Pipes (FIFOs) Message Queues Shared Memory + Semaphores Sockets Signals

4. Pipes & Named Pipes (FIFOs) Pipes: Unidirectional, for related processes (parent-child) Named Pipes: Unidirectional, appear as files, work for unrelated processes Used for simple data transfer between processes

5. Message Queues Send/receive structured messages Asynchronous communication Supports prioritization Common in client-server models

6. Shared Memory Fastest method for large data sharing Memory region shared by multiple processes Needs synchronization (semaphores or mutexes) Used in databases, caching systems

7. Semaphores Used to manage access to shared resources Binary and Counting semaphores Avoid race conditions Control access to critical sections

8. Sockets Bidirectional communication Can be local or over network Used in web servers, network services Versatile and scalable

9. Signals Asynchronous notifications between processes Used to notify events (e.g., termination, segmentation fault) Examples: SIGINT, SIGTERM, SIGKILL

10. Real-World Applications of IPC Pipes: Shell commands (e.g., ls | grep) Message Queues: Banking transactions Shared Memory: PostgreSQL caching Sockets: Web servers like Apache/Nginx Semaphores: Printer spoolers Signals: OS process control

11. Socket IPC Example (Python) Server: socket(), bind(), listen(), accept(), recv() Client: socket(), connect(), send() Uses UNIX domain socket for local communication